WO2007053873A2 - Main courante - Google Patents

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Publication number
WO2007053873A2
WO2007053873A2 PCT/AT2006/000463 AT2006000463W WO2007053873A2 WO 2007053873 A2 WO2007053873 A2 WO 2007053873A2 AT 2006000463 W AT2006000463 W AT 2006000463W WO 2007053873 A2 WO2007053873 A2 WO 2007053873A2
Authority
WO
WIPO (PCT)
Prior art keywords
handrail
handle
glycol
upper limit
lower limit
Prior art date
Application number
PCT/AT2006/000463
Other languages
German (de)
English (en)
Other versions
WO2007053873A3 (fr
Inventor
Armin Holzner
Herwig Miessbacher
Reinhard Zörnpfenning
Original Assignee
Semperit Aktiengesellschaft Holding
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Semperit Aktiengesellschaft Holding filed Critical Semperit Aktiengesellschaft Holding
Priority to CN200680050451XA priority Critical patent/CN101410320B/zh
Priority to US12/093,210 priority patent/US8006823B2/en
Priority to DE112006003032.9T priority patent/DE112006003032B4/de
Publication of WO2007053873A2 publication Critical patent/WO2007053873A2/fr
Publication of WO2007053873A3 publication Critical patent/WO2007053873A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B23/00—Component parts of escalators or moving walkways
    • B66B23/22—Balustrades
    • B66B23/24—Handrails

Definitions

  • the invention relates to a handrail for escalators or moving walkways with a handle made of a thermoplastic elastomer with soft and hard segments, a handrail for escalators or moving walkways with a handle made of a polymer material and arranged thereon or associated therewith, at least partially via a lower surface - on the installation orientation - extending sliding layer of a fabric with warp and weft threads and a method for producing such handrails.
  • Handrails for escalators, moving walks or similar applications are used as security elements for passenger transport.
  • the handrail must allow the passenger a secure grip and be able to cope with the dynamic stresses or the environmental influences during operation without being damaged.
  • Handrails known from the prior art have a C-shaped cross-section and are usually constructed of a variety of different materials to meet these requirements.
  • the touchable by the passenger handrail surface is usually made of an elastomer mixture.
  • the handrail cover also protects all underlying components against various environmental influences and must therefore be resistant to them.
  • reinforcing inserts e.g. Tissue cords used.
  • a sufficiently high lip stiffness i.
  • the handrail contains in its cross section for receiving longitudinal forces so-called tension members, which must have a defined minimum tear strength in the joint area.
  • the so-called sliding layer forms the contact surface of the handrail to the handrail guide or the handrail drive system.
  • handrail sector for escalators or escalators.
  • this is a natural rubber or synthetic styrene-butadiene rubber (SBR).
  • SBR styrene-butadiene rubber
  • Handrails made of Hypalon ® , a chlorosulfonated polyethylene, and polyurethane handrails are also on the market.
  • a handrail for escalators and moving walks known with a handle made of a polymer material, a tensile forces receiving reinforcing layer, a layer for shape stabilization from arranged in the transverse direction textile layers and a final sliding layer.
  • the layers are combined in one piece to form a textile structure and can be connected to the handle in a single production run.
  • the handle itself may be formed of a thermoplastic elastomer.
  • DE 198 32 158 Al describes a handrail for an escalator or a running band with a thermoplastic elastomer, which preferably has at least a Shore hardness of 80 and is equipped with a C-shaped profile.
  • the inwardly facing surface of the handrail may consist of a section of a different material, which preferably has a lower hardness than the rest of the handrail and is also extruded. Ribs or notches may be provided on the inboard face or drive surface of the handrail to vary the surface area of contact with the drive means.
  • the use of the hard thermoplastic material for the formation of the nose and the outer portion of the handrail increases the shape retention in heavy use and reduces the need for further reinforcement. The friction between the guide means on which the handrail runs is also reduced.
  • a handrail for escalators and moving walks which consists of a thermoplastic elastomer (TPE, TPO, TPU), preferably a thermoplastic polyurethane extruded (extruded) is made.
  • a tension member, which is located in the middle of the handrail, is designed as a roller chain with lateral bolts and can be clipped form-fitting from below into a recess provided for this purpose.
  • hollow channels can be provided, which both help to save material and reduce flexural rigidity.
  • On the underside of the handrail can be provided on the right and left of the Switzerlandtownsparung located channels in which runs the balustrade guide the escalator.
  • a thin-walled tube of ultra-high-molecular-weight polyethylene (alternatively polytetrafluorethylene) can be arranged therein, which is compressed when being tied onto the balustrade guide. This reduces the coefficient of friction between the guide and the handrail as well as the abrasion to a minimum.
  • handrails which at least partially consist of a thermoplastic material.
  • a handrail with a C-shaped profile which consists of a first layer of a thermoplastic material, a second layer of a likewise thermoplastic material, which is arranged on the first layer and the defined outer surface of the handrail and a sliding layer, which is arranged on the lower first thermoplastic layer.
  • a tensile carrier is incorporated in the first layer and is this first layer of a harder thermoplastic material than the second layer.
  • the object of the present invention is to provide a handrail with improved properties.
  • This object of the invention is independently achieved by a handrail, wherein the handle is made of a thermoplastic elastomer, wherein the ratio of
  • Shares of the soft to hard segments is selected from a range with a lower limit of 1: 1 and an upper limit of 9: 1, preferably a range with a lower limit of 1, 5: 1 and an upper limit of 6: 1, in particular from a range with a lower limit of 2.5: 1 and an upper limit of 4: 1, by a handrail in which the sliding layer consists of weft threads and warp threads, wherein the weft threads have a higher stiffness (elastic modulus) than the warp threads, as well as by a method for producing such a handrail.
  • a handrail designed in this way on the one hand has a good tactility, on the other hand, the corresponding strength, so that it can be used without additional reinforcing elements if necessary.
  • Handrails according to the invention show good abrasion resistance, which is advantageous in terms of continuous contact with drive elements.
  • the handrails according to the invention have a long service life despite the frequent negative or positive bending of the handrail. There is also only a small, temperature-dependent, reversible change in length, so that such handrails have good dimensional stability.
  • the proportion of hard segments is selected from a range with a lower limit of 10%, preferably 15%, in particular 20%, and an upper limit of 50%, preferably 40%.
  • the proportion of soft segments is selected from a range with an upper limit of 90%, preferably 85%, in particular 80%, and a lower limit of 70%, preferably 60%, in particular 50% on the overall composition of the thermoplastic elastomer.
  • the degree of crystallinity of the thermoplastic elastomer is selected from a range with a lower limit of 10%, preferably 20%, in particular 25%, and an upper limit of 50%, preferably 40%, in particular 30%.
  • the thermoplastic elastomer may be a thermoplastic polyurethane block copolymer, at least consisting of monomer units A and B 5, for example a diblock copolymer ([AB] n ), a triblock copolymer (A n -B 1n -A n ), a segmented copolymer ([A 3 - B b ] n ), a star block copolymer ([A n -Bm] x X with x> 2).
  • the buckling or tear resistance is high and also the dynamic load capacity improved.
  • Such a handrail has a good weather resistance and oil, grease and solvent resistance.
  • the proportion of the monomer units B of the molecules of the soft segments in the polymer chain of the thermoplastic polyurethane is selected from a range with a lower limit of 20%, preferably 30%, in particular 35%, and an upper limit Limit of 70%, preferably 60%, in particular 50%, based on the total mixture soft and hard segments.
  • the soft segments may be formed at least from a long-chain compound having at least two hydroxyl groups, in particular a long-chain diol, preferably a polyester and / or a polyether diol, having a molecular weight of 600 to 4000, the long-chain diol being particularly selected from a group comprising 1,4-bis (2-hydroxyethoxy) benzene [hydroquinone bis (2-hydroxyethyl) ether], polytetrahydrofuran, poly (oxytetramethylene) glycol, poly (1, 2-oxypropylene) glycol, poly (tetramethyl) lenadipic acid) glycol, poly (ethylene adipic acid) glycol, poly ( ⁇ -caprolactam) glycol, poly (hexamethylene carbonate) glycol, polycaprolactone.
  • a long-chain diol preferably a polyester and / or a polyether diol, having a molecular weight of 600 to 4000
  • the long-chain diol
  • the advantage is achieved that a handrail made therefrom shows improved hydrolysis and microbial resistance, so that it is possible, if appropriate, to dispense with further additives for improving these properties.
  • the advantage here is further that the flexibility of the handrail can be varied by using the specified compounds, so that consideration can be given to different handrail lengths. It is also advantageous that the rigidity of the handrail does not fall below a predeterminable level.
  • the hard segments consist of at least one short-chain compound having at least two hydroxyl groups, in particular a short-chain diol, having a molecular weight of 61 to 600, wherein the short-chain diol is in particular selected from a group comprising 1,4-butanediol, 1,6-hexanediol, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol , 2,2-dimethyl-1,3-propanediol, 1,10-decanediol, 1,4-cyclohexanedimethanol.
  • the short-chain diol is in particular selected from a group comprising 1,4-butanediol, 1,6-hexanediol, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol , 2,2-dimethyl-1,3-propanediol, 1,10-decanedio
  • 1,4-butanediol and / or 1,6-hexanediol and / or ethylene glycol and / or diethylene glycol and / or triethylene glycol and / or propylene glycol and / or dipropylene glycol and / or 2,2-dimethyl-l , 3-propandol and / or 1,10-decanediol, 1,4-cyclohexanedimethanol with 1,4-butanediol and / or 1,6-hexanediol and / or ethylene glycol and / or diethylene glycol and / or triethylene glycol and / or propylene glycol and / or dipropylene glycol and / or 2,2-dimethyl-1,3-propanediol and / or 1, 10-decanediol and / or 1,4-cyclohexanedimethanol are also possible.
  • thermoplastic elastomer can be obtained by reaction of the compound (s) comprising at least two hydroxyl groups with at least one isocyanate from a group comprising aromatic isocyanates, in particular diisocyanates, such as, for example, 4,4'-methylenediphenyl diisocyanate, 3,3 "-dimethyl-1.
  • the at least two hydroxyl groups comprising Compound (s) may be a polyol selected from a group comprising polyadiolates based on polyadaptates of short-chain diols having two hydroxy functional groups and 2 to 20 carbon atoms, for example polycaprolactones, polycarbonate diols and / or polyols having more than two free ones
  • the compound (s) comprising at least the two hydroxy groups can be a polyol n having a molecular weight selected from a range with a lower limit of 1000 and an upper limit of 2000.
  • aromatic isocyanates in particular diisocyanates, such as, for example, 4,4'-methylenediphenyl diisocyanate and / or 3,3'-dimethyl-4,4 r -biphenyldiisocyant and / or 1,5-naphthalene diisocyanate and / or toluylene diisocyanate, aliphatic isocyanates, such as 4,4'-dicyclohexylmethane diisocyanate and / or hexamethylene diisocyanate and / or hexamethylene diisocyanate triisocyanurate and / or isophorone diisocyanate with at least one aromatic isocyanate, in particular diisocyanate, such as, for example, 4,4'-methylenediphenyl diisocyanate and / or 3,3'-dimethyl-4,4'-biphenyl diisocyanate and / or 1,5
  • At least two compounds comprising hydroxyl groups have an acid number of less than 1 mg KOH / g compound.
  • thermoplastic vulcanizate TPE-V
  • a resistance to chemicals which is comparable to chloroprene rubber compounds, especially for aqueous liquids, oil and hydrocarbons. It also achieves improved dynamic fatigue strength. Also, the ozone and weather resistance can be improved.
  • the thermoplastic vulcanizate can be formed from an ethylene / propylene-diene-methylene (EPDM) -polypropylene mixture, wherein the EPDM content of the mixture according to one embodiment is selected from a range with a lower limit of 20%, preferably 25% in particular 30%, and an upper limit of 45%, preferably 40%, in particular 35% or according to another embodiment, the polypropylene content of the mixture is selected from a range with a lower limit of 5%, preferably 7%, in particular 10%, and an upper limit of 25%, preferably 17%, especially 15%. It can thus the elongation at break, depending on the design of the EPDM / PP blend, i.
  • EPDM ethylene / propylene-diene-methylene
  • values of approx. 300 or 350% can be set or values of the order of 600 for mechanical EPDM / PP blends % to 800% can be achieved.
  • the tear strength can be varied accordingly, for example between 5 MPa and 30 MPa.
  • EPDM / PP mixture at least one further additive selected from a group comprising plasticizers, fillers, dyes, antibacterial agents, crosslinkers or mixtures thereof.
  • Handle single-layer form whereby the production as well as the subsequent splicing to join the handrail ends simplified accordingly and thus the production costs can be reduced.
  • At least one tensile carrier is embedded, for example made of steel, to a higher length stability, i. allow a small variance in the length change during operation of the handrail.
  • tension member is embedded in an outer layer of the handle, whereby the flexibility of the handrail can be improved in bends.
  • the handle at least in two layers, with a cover layer and a reinforcing layer arranged thereunder, based on the installation orientation of the handrail, short fibers being embedded in the reinforcing layer. It can thus be given the handrail improved rigidity, where appropriate, can be dispensed with the tension member.
  • the manufacture of the handrail is simplified because the short fibers are already present in the handrail mix, i. the reinforcing layer, can be added and this mixture can therefore be processed by conventional methods.
  • the short fibers may be formed of a material selected from a group comprising inorganic materials such as carbon, glass, metals or alloys such as For example, steel, aluminum, copper, and organic materials such as synthetic fibers, such as nylon, polyester, aromatic polyamides (Kevlar), or natural fibers, such as cotton, cellulose fibers, viscose, and mixtures thereof, such as inorganic materials, such as For example, carbon and / or glass and / or metals or Legiele, such as steel and / or aluminum and / or copper and / or organic materials such as synthetic fibers, for example of nylon and / or polyester and / or aromatic polyamides (Kevlar) and / or natural fibers, for example of cotton and / or cellulose fibers and / or viscose with inorganic materials, such as carbon and / or glass and / or metals or alloys, such as steel and / or aluminum and / or copper and / or organic materials, such as synthetic fibers, for example of nylon and
  • the reinforcing layer can be formed interrupted in the longitudinal direction, wherein, in the event that a tension member is used in the handrail, in this case it is advantageous if this tension member is arranged in the cover layer. By interrupting the reinforcing layer improved bending properties can be achieved.
  • the reinforcing layer has at least approximately the same hardness as the cover layer in order not to adversely affect the hardness of the entire handrail.
  • the warp threads have an initial elastic modulus according to ASTM D 885, selected from a range with a lower limit of 4.5 G Pa, preferably 5.0 G Pa, in particular 5.3 G Pa, and an upper limit of 12 G Pa, preferably 10 Pa G, particularly G 9 Pa. whereby the handrail can be given a better longitudinal elasticity.
  • the warp threads may be formed by staple fibers, which staple fibers according to one embodiment may be selected from a material group comprising polyamides, polyimides, especially aromatic para-aramids, polyesters, polyolefins, eg polypropylene and mixtures thereof, such as polyamides and / or polyimides and / or in particular aromatic para-aramids and / or polyesters and / or polyolefins, eg polypropylene, with polyamides and / or polyimides, in particular aromatic para-aramids and / or polyesters and / or polyolefins, eg polypropylene. It is thus possible to improve the tensile strength of the warp threads.
  • the warp threads by rubber threads, wherein the material compatibility can be improved to the material of the cover layer or the other layers of the handrail.
  • the weft yarns may have a stiffness (elastic modulus) according to ASTM D 885 selected from a range having a lower limit of 6.0 G Pa, preferably 7.0 G Pa, more preferably 8.0 G Pa, and an upper limit of 175 G Pa, preferably 165 G Pa, in particular 150 G Pa, whereby a high lip stiffness of the handrail is achieved and thus the lifting of the balustrade or guide arrangement of the handrail can be better prevented.
  • a stiffness (elastic modulus) according to ASTM D 885 selected from a range having a lower limit of 6.0 G Pa, preferably 7.0 G Pa, more preferably 8.0 G Pa, and an upper limit of 175 G Pa, preferably 165 G Pa, in particular 150 G Pa, whereby a high lip stiffness of the handrail is achieved and thus the lifting of the balustrade or guide arrangement of the handrail can be better prevented.
  • the weft threads may be selected from a group of materials comprising polyamide, polyester, multifilament yarns, aramids or mixtures thereof, such as e.g. Polyamide and / or polyester and / or multifilament yarns and / or aramids with polyamide and / or polyester and / or multifilament yarns and / or aramids to improve these properties of the sliding layer for handrails.
  • the polymeric material of the handle may be selected from a group of materials including thermoplastic elastomers, such as e.g. TPU (thermoplastic polyurethane), TPV (thermoplastic vulcanizates), TPO (thermoplastic polyolefins), SBS or SIS or SBC (thermoplastic styrene triblock copolymers), TP-NR (thermoplastic natural rubber), TP-NBR (thermoplastic nitrile rubber), TP-FKM (thermoplastic fluorinated rubber), CPO or CPA (copolymeric polyetherester), PEBA (polyether block amide), further EPDM, natural rubber, CSM, CR (isoprene rubber), SBR (styrene-butadiene rubber), BR (butyl rubber), NBR ( Nitrile rubber), PU (polyurethane) and mixtures or blends thereof. It is thus the sliding layer universally usable for already known hand materials.
  • thermoplastic elastomers such
  • the handle has a Shore A hardness selected from a range with a lower limit of 55 SIiA 5, preferably 63 ShA, in particular 70 ShA, and an upper limit of 50 ShD, preferably 45 ShD, in particular 40 ShD.
  • grips made of a thermoplastic elastomer can have a hardness in the range of 40 ShD to 45 ShD and those of a cross-linked elastomer have a hardness in the range between 60 ShA and 70 ShA.
  • the sliding layer is embedded in the grip piece at least regionally, in particular its side regions, in order to at least largely prevent the pull-out strength or the delamination of the sliding layer.
  • the handrail can be produced continuously by extrusion or multilayer coextrusion and / or batchwise by stacking the individual layers and then by press vulcanization, with continuous procedures being preferred within the scope of the invention.
  • FIG. 1 shows a detail of a handrail in an oblique view.
  • FIG 2 shows the handrail of Figure 1 in cross section.
  • Fig. 3 shows another embodiment of a handrail in an oblique view.
  • Fig.l handrail 1 is shown for an escalator or a moving walk.
  • This comprises a handle 2, which faces the user of the escalator or the roller bar in the installation position of the handrail 1.
  • a tension member 3 can be arranged, the longitudinal forces, which acts on the handrail 1 acts, and thus length changes of the handrail 1 at least partially prevented.
  • a sliding layer 4 is arranged, via which the handrail 1 with guide means, not shown, such as the balustrade of an escalator, and drive means, which are known from the prior art, can be brought into engagement.
  • the drive of the handrail 1 can be done in any way, as is already known from the prior art.
  • Such drive means are e.g. Roller drives, crawler drives, etc.
  • the tension member 3 can, as is known, consist of a metal or an alloy, for example steel. Furthermore, the tension member 3 consist of individual wires or steel cables. It is also possible that the tension member 3 is a continuous steel band or the like.
  • the sliding layer 4 is usually made of a fabric of threads and serves the purpose of exercise between the handrail 1 and the guide means during the movement of the handrail 1 to a degree to reduce, which are necessary for the drive of the handrail 1.
  • the sliding layer 4 can in principle be designed according to the state of the art, so that reference is made at this point to the relevant literature or preferably according to the invention, as will be explained in more detail below.
  • the sliding layer 4 may be glued to the handle 2 or be otherwise connected to the handle 2, for example by a rubber material is attached to the surface of the sliding layer 4 before installation and this during the manufacture of the handrail, such as vulcanization, with the remaining Layers of the handrail 1 is connected. It is also conceivable that, in the case that the handrail 1 is preferably produced by an extrusion process, the sliding layer 4 is fed to the extruder and the handle 2 is extruded onto this sliding layer.
  • the sliding layer 4 extends, as can be better seen in FIG. 2, into an outer lip region 5 of the handle 2 of the handrail 1.
  • the sliding layer 4 only over a partial region of a recess 6, which is defined by the cross section of the handrail 1 and in the present embodiment of the invention, after the handrail has a C-shaped profile, T-shaped.
  • this sliding layer 4 can thus extend as far as an inner edge 7 of the recess 6, this edge 7 being located at a transition between an at least approximately horizontal region 8 of a lip 9 of the handrail 1 and an at least approximately vertical region 10 of an inner surface 11 the handrail 1 can be located.
  • the sliding layer 4 is anchored with its lateral end portions in the handle 2, i. projects with these end portions in the handle 2, as indicated by dashed lines in Fig. 2.
  • the handle 2 is in one piece according to the embodiment shown in FIGS. 1 and 2, i. single-layered, formed. It is equally possible within the scope of the invention to form this multi-layered with a Verstärkungsscbicht, as will be explained in more detail below.
  • the handle 2 is made of a thermoplastic elastomer.
  • thermoplastic elastomers are polymer materials that combine the properties of elastomers with the processing properties of thermoplastics. This is achieved in that in the macromolecules of the corresponding plastics simultaneously soft and elastic segments with high ductility and low glass transition temperature and hard, crystallizable segments with low ductility, high glass transition temperature and tendency to associate formation (physical crosslinking) are present.
  • the soft and hard segments are incompatible with each other and exist as individual phases. Characteristic of thermoplastic elastomers are thus thermolabile, reversibly cleavable crosslinking sites, usually physical but also chemical nature.
  • the proportions of soft and hard segments are such that they are selected from the abovementioned ranges. It can thus handrails 1 relatively inexpensively with processing methods for thermoplastics, such as extruding or coextruding, are produced, on the one hand have sufficient rigidity, on the other hand also allow sufficient bending to undamaged over a long period of time for handrails 1 in the area to survive the drives and deflections normally occurring negative or positive bends.
  • a corresponding tactility is achieved, which is at least comparable with that which is known from handrails made of natural rubber.
  • thermoplastic polyurethanes or thermoplastic vulcanizates (TPV) are particularly preferably used as thermoplastic elastomers.
  • thermoplastic elastomers such as styrene-based thermoplastic elastomers (SBS, SIS, SIBS), thermoplastic natural rubber (NR-TP), EVA / PVDC blends, NBR / PP blends, polyether esters, polyether, thermoplastic Olefin Based Elastomers, TPR (Thermoplastic Nitrile Rubber), Thermoplastic Flour Rubber (TP-FKM), Thermoplastic Silicone Rubber (TP-Q), Copolymer Polyetherester (CPE, CPA) 5 Polyetherblockarmide (PEBA), Blends of Crosslinked EPM or EPDM with Polyolefins (TPO), blends of uncrosslinked EPM or EPDM in polyolefms (EPDM / PP).
  • SBS styrene-based thermoplastic elastomers
  • NR-TP thermo
  • thermoplastic polyurethane according to the invention can consist, for example, of short-chain diols with isocyanates for hard segments, long-chain polyester and / or polyether diols for the soft segments in the form of an [AB] n block polymer.
  • the short-chain diols In this case, molar masses M g in the range from 61 to about 600 (weight average), the long-chain diols molar mass M n in the range between 600 and 4,000 (number average).
  • hydroxyl polyols in particular of the abovementioned type having molar masses between 1,000 and 2,000 g M (weight average) and / or an acid number ⁇ 1 mg KOH / g polyvinyl lyol be used. It is thus possible, for example, to prepare mixtures of long-chain polyols, diisocyanates and short-chain diols within the scope of the invention. In addition, this mixture may also contain other additives, such as internal release agents, montan acid esters, silicones, Armid waxes, plasticizers, in the event that the thermoplastic elastomer should have a hardness of ⁇ 70 ShA.
  • plasticizer aromatic plasticizer oils, naphthenic process oils, or paraffinic process oils may be used.
  • plasticizers are known to those skilled in the art and for this purpose, for example, reference is made to the WdK guideline (WDK) 1315, sheet 2, with regard to the specification.
  • thermoplastic polyurethanes can preferably be carried out without solvent, with an NCO / OH ratio which is preferably stoichiometric, but should not be less than about 0.95 or 0.97.
  • thermoplastic polyurethanes which are used in the context of the invention.
  • the NCO / OH ratio of these seven mixtures is in the range between 1.01 and 1.05.
  • thermoplastic vulcanizates preference is given to using EPDM / PP blends and, for this purpose, an example of a composition is again given in Table 2.
  • crosslinking system a peroxide resin crosslinking system can be used.
  • the numbers in the first line underneath the respective material here mean the hardnesses according to Shore A.
  • Tables 4 to 8 give example formulations for further thermoplastic elastomers which can be used in the context of the invention, where "phr” stands for "parts per hundred rubber”.
  • additives such as dyes, etc.
  • the handrail 1 according to the invention consists of a thermoplastic elastomer
  • the splicing i. the connection of the two ends of the handrail 1 to an endless belt
  • simple processing techniques from thermoplastic chemistry, such as extrusion processes can be used for this purpose.
  • a direct welding or gluing the two ends together is possible. It thus eliminates the need to fit a connector and its elaborate
  • Pattern formation to overlap individual layers to make a permanent bond
  • multi-layered ie at least two layers, form. It can be provided according to the invention that below a first Layer, which faces the user of the escalator or moving walkway, another layer is arranged as a reinforcing layer.
  • this reinforcing layer short fibers, as stated above, be arranged, wherein the orientation of these short fibers in the reinforcing layer is completely random, ie no preferred direction is given.
  • the handrail 1 a corresponding transverse rigidity, in particular a lip stiffness, can be awarded.
  • a large part of the short fibers is arranged at an angle to the longitudinal extent of the handrail 1.
  • This second layer may preferably have the same hardness as the cover layer of the grip piece 2.
  • the layers of the handle 2 may be formed of different materials, in particular different thermoplastic elastomers, but also the formation of the same elastomer is possible.
  • a coextrusion process can be used to produce a multilayered handle, with the short fibers already being added to the plastic strand.
  • cover layer i. the outermost layer of the handle 2
  • the cover layer is pulled into the lip area, so that therefore the other layers or the inner layer, is covered by the cover layer, so from the resulting inner layers from the outside nothing to see, since these inner layers are covered at the bottom by the sliding layer 4.
  • a tension member 3 may be provided, this preferably in the
  • Cover layer is embedded, so for example, the reinforcing layer is carried out karméok.
  • thermoplastic elastomers for the handrails 1 can be further achieved the advantage that these, in comparison to natural rubber, can be imparted with relatively simple means a dullness, ie, a color that does not correspond to that of the base material.
  • This can be achieved, for example, by the base material itself being dyed, ie provided with a dye, but on the other hand it is possible with already known coating systems on the handrail, ie the handle 2, a layer réellelackieren, in particular already during the extrusion process, so a so-called online-coating perform.
  • a handrail 1 according to the invention is shown.
  • This in turn comprises the handle 2, the tension member 3 in the handle 2, and the sliding layer 4 on the underside of the handle 2.
  • the handle 2 may in turn be formed one or more layers, wherein the layers may also have different mechanical properties and different Materials can exist.
  • the handle 2 is formed from a polymer material, ie in particular from a thermoplastic elastomer, such as TPU, TPV, TPO, EPDM, natural rubber, CSM 5 CR, SBR, BR, NBR, BU, as well as mixtures or blends thereof ,
  • the sliding layer 4 consists of a structure of at least approximately in the longitudinal direction of the handrail 1 extending warp threads 12 and at least approximately orthogonal thereto weft threads 13. According to the weft threads have a higher stiffness than the warp threads, so are stiffer, ie. they have a higher modulus of elasticity.
  • the Kett composition. Weft threads may be made from the above materials, with the fabric of the slip layer 4, i. the warp threads 12 and the weft threads 13, may consist of the same material with different stiffnesses or else of mutually different materials.
  • combinations of staple fibers of polyamide or polyester for the warp yarns 12 with fibers of polyester, multifilament yarns or aramid fibers for the weft yarns 13 are usable. It is thereby achieved that the handrail 1 can be given a higher lip stiffness while simultaneously achieving flexibility in the longitudinal direction.
  • the weft threads 13 may have an initial elastic modulus according to ASTM D 885 selected from a range with a lower limit of 6.0 G Pa and an upper limit of 175 G Pa. It is also possible that the weft threads 13 have an initial modulus of elasticity selected from a range with a lower limit of 7.0 G Pa and an upper limit of 165 G Pa or from an area with a lower limit of 8.0 G Pa and an upper limit of 150 G Pa. For example, the weft threads a have an initial elastic modulus according to ASTM D 885 of 80 G Pa, 85 G Pa, 90 G Pa, 100 G Pa, 115 G Pa, 125 G Pa and 150 G Pa.
  • the warp yarns 12 may have an initial modulus of elasticity according to ASTM D 885 selected from a range having a lower limit of 4.5 G Pa and an upper limit of 12 G Pa.
  • Para-aramid threads are particularly preferably used as weft threads 13, for example Twaron® or Kevlar® threads.

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  • Escalators And Moving Walkways (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne une main courante (1) pour des escaliers roulants ou des tapis roulants. Cette main courante comprend une poignée (2) qui est constituée d'un élastomère thermoplastique et qui est formée de segments mous et de segments durs et éventuellement d'une couche de glissement (4) placée sur une face inférieure de la poignée (2) par rapport à l'orientation de montage de la main courante (1). La proportion de segments mous par rapport aux segments durs est choisie dans une plage dont la limite inférieure est de 1:1 et dont la limite supérieure est de 9:1, de préférence dans une plage dont la limite inférieure est de 1,5:1 et dont la limite supérieure est de 6:1, en particulier dans une plage dont la limite inférieure est de 2,5:1 et dont la limite supérieure est de 4:1.
PCT/AT2006/000463 2005-11-09 2006-11-09 Main courante WO2007053873A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200680050451XA CN101410320B (zh) 2005-11-09 2006-11-09 由多种热塑性弹性体链段制成的用于自动楼梯的扶手
US12/093,210 US8006823B2 (en) 2005-11-09 2006-11-09 Handrail
DE112006003032.9T DE112006003032B4 (de) 2005-11-09 2006-11-09 Handlauf für Rolltreppen aus mehreren thermoplastischen Elastomersegmenten

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0182905A AT502900B1 (de) 2005-11-09 2005-11-09 Handlauf
ATA1829/2005 2005-11-09

Publications (2)

Publication Number Publication Date
WO2007053873A2 true WO2007053873A2 (fr) 2007-05-18
WO2007053873A3 WO2007053873A3 (fr) 2007-09-27

Family

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PCT/AT2006/000463 WO2007053873A2 (fr) 2005-11-09 2006-11-09 Main courante

Country Status (5)

Country Link
US (1) US8006823B2 (fr)
CN (1) CN101410320B (fr)
AT (1) AT502900B1 (fr)
DE (1) DE112006003032B4 (fr)
WO (1) WO2007053873A2 (fr)

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JP5675357B2 (ja) * 2007-09-10 2015-02-25 イー エイチ シー カナダ インコーポレーテッドＥＨＣ Ｃａｎａｄａ，Ｉｎｃ． 改良された手すり
WO2009033270A1 (fr) * 2007-09-10 2009-03-19 Ehc Canada, Inc. Procédé et appareil d'extrusion d'une main courante en matière thermoplastique
RU2476316C2 (ru) * 2007-09-10 2013-02-27 ИЭйчСи Канада, Инк. Устройство и способ предварительной обработки слоя скольжения для поручней из экструдированного композиционного материала
CN101962151B (zh) * 2010-08-31 2012-12-26 吴江市康龙橡塑制品有限公司 一种强韧性扶手带的制造方法
CN101973481B (zh) * 2010-09-29 2012-12-05 吴江市康龙橡塑制品有限公司 一种耐久型扶手带
CN102692727A (zh) * 2012-05-25 2012-09-26 钟沿东 一种多色眼镜架、表壳异型材毛坯及其成型设备
DE112012006807B4 (de) * 2012-08-13 2019-12-24 Mitsubishi Electric Corporation Beweglicher Handlauf für Personenförderer, und Vorrichtung zur Herstellung eines beweglichen Handlaufs für Personenförderer
JP5880375B2 (ja) * 2012-09-25 2016-03-09 富士ゼロックス株式会社 クリーニングブレード、クリーニング装置、プロセスカートリッジ、および画像形成装置
JP5849977B2 (ja) * 2013-03-08 2016-02-03 富士ゼロックス株式会社 クリーニングブレード、クリーニング装置、プロセスカートリッジ、および画像形成装置
JP5949736B2 (ja) * 2013-12-06 2016-07-13 三菱電機ビルテクノサービス株式会社 乗客コンベアの移動手摺
CA2984255C (fr) 2015-05-07 2023-02-14 Ehc Canada, Inc. Mains courantes composites compactes ayant des proprietes mecaniques ameliorees
BR112017025648B1 (pt) 2015-06-19 2022-05-17 Ehc Canada, Inc Método e aparelho de extrudar um artigo de seção transversal uniforme
WO2019215941A1 (fr) * 2018-05-09 2019-11-14 三菱電機株式会社 Procédé de production de main courante mobile
CN109159513A (zh) * 2018-07-18 2019-01-08 苏州瑞高新材料有限公司 一种用于汽车内饰的软质tpo材料及其制备方法
CN113518795A (zh) * 2019-03-14 2021-10-19 巴斯夫欧洲公司 包含热塑性多异氰酸酯加聚产物和阻燃剂的组合物
DE102021115997A1 (de) 2021-06-21 2022-12-22 Semperit Ag Holding Handlauf und Verfahren zur Herstellung des Handlaufs
DE102021116000A1 (de) 2021-06-21 2022-12-22 Semperit Ag Holding Handlauf und Verfahren zum Herstellen eines Handlaufs

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GB947160A (en) * 1959-03-16 1964-01-22 Pentafort A G Improvements in or relating to lining material for the rope groove of pulley wheels
JPS61252A (ja) * 1984-06-12 1986-01-06 Showa Electric Wire & Cable Co Ltd クロロスルホン化ポリエチレンゴム組成物
US5255772A (en) * 1992-12-22 1993-10-26 Escalator Handrail Company Handrail for escalators and moving walkways with improved dimensional stability
DE19641502A1 (de) * 1996-10-09 1998-04-16 Contitech Elastomer Besch Gmbh Verfahren zur Herstellung eines Handlaufes und nach dem Verfahren gefertigter Handlauf
DE19701063A1 (de) * 1997-01-15 1998-07-16 Boettcher Tech Gmbh & Co Gummierte Gewebestreifen bestehend aus einem starken Querfaden und einem schwachen Längsfaden
GB2327405A (en) * 1997-07-18 1999-01-27 Silvertown Uk Limited Handrail of thermoplastic material
WO2000001607A1 (fr) * 1998-06-30 2000-01-13 Escalator Handrail Company Inc. Construction de rampe composite
WO2000015536A1 (fr) * 1998-09-11 2000-03-23 Semperit Aktiengesellschaft Holding Main courante
DE10208958C1 (de) * 2002-02-28 2003-08-14 Boettcher Tech Gmbh & Co Verfahren zur Herstellung von gummierten Gewebestreifen
JP2003327380A (ja) * 2002-05-09 2003-11-19 Mitsubishi Electric Corp 乗客コンベア用移動手摺およびその製造方法
JP2005179018A (ja) * 2003-12-22 2005-07-07 Mitsubishi Electric Corp 乗客コンベヤー用移動手摺及びその製造方法

Also Published As

Publication number Publication date
AT502900A1 (de) 2007-06-15
US8006823B2 (en) 2011-08-30
DE112006003032A5 (de) 2008-10-23
US20090218192A1 (en) 2009-09-03
CN101410320A (zh) 2009-04-15
AT502900B1 (de) 2008-12-15
CN101410320B (zh) 2012-03-28
WO2007053873A3 (fr) 2007-09-27
DE112006003032B4 (de) 2020-07-23

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